constant brake light
Here is what you will need to do the job.
New brake light switch.
Brake Fulid (make sure it is the right type for your bike. I am guessing DOT 4 as mine is).
Permatex or some other brand of thread sealant. It usually white.
A ratcheting wrench or deep socket to remove the switch. I think it's 9/6 but I can't remember off the top of my head.
If you don't have a ratcheting wrench then a deep socket (six point) and a 1/4 ratchet will work as well.
Some clean rags to clean off brake fluid. I recommend keeping a spray bottle with soapy water at hand to spray away any spilled fluid.
Start by unplugging both wires from the switch and pulling them out of the way. You clutch cable might be in the way but there should be enough slack in it to pull it out and away from the frame. Verify the size of the socket/wrench and have it ready. Get your new switch ready by removing it from the package and applying a dot of thread sealant on the threads, sort of like you might apply loctite to a bolt. Set it somewhere where you can reach it quickly (I put mine on my floorboard). Have your rags ready and close at hand as well. You will want to make the swap fast in order to avoid spilling to much brake fluid. Take your socket or wrench and start removing the plug but do not take it out all the way. Loosen it until you feel that you can remove it the rest of the way with your finger. Once you get this far, remove it the rest of the way with one hand and have your other hand free to plug the hole with your finger. You should only lose a few drips of fluid. Take the new plug and quickly start threading it in, again trying not to let too much fluid drip. If you do it right the spillage should be VERY minimal. Tighten the new switch down and plug the two wires back in. Also, set your clutch cable back how it was in the frame. Now use that soapy water and clean rags to clean any fluid off your bike to avoid damage to any painter areas. It will mostly have gotten on the frame.
Although the amount of fluid loss is minimal you should still bleed your rear brake just to make sure you didn't get an air bubble in there. If you do everything goes right, changing out the switch should be no more than a ten minute job. It really is pretty easy.
Hope this helps. Hit me up if you have any other questions.








